20171618780

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{4349}}^1\times {\mathrm{7481}}^1$

素因数の和:11870

約数の個数: 48

約数和(自身を含む): 43742764800

約数和(自身を除く): 23571146020

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 4349, 7481, 8698, 14962, 17396, 21745, 29924, 37405, 43490, 74810, 86980, 134819, 149620, 231911, 269638, 463822, 539276, 674095, 927644, 1159555, 1348190, 2319110, 2696380, 4638220, 32534869, 65069738, 130139476, 162674345, 325348690, 650697380, 1008580939, 2017161878, 4034323756, 5042904695, 10085809390, 20171618780]

約数ペア:

[(1, 20171618780), (2, 10085809390), (4, 5042904695), (5, 4034323756), (10, 2017161878), (20, 1008580939), (31, 650697380), (62, 325348690), (124, 162674345), (155, 130139476), (310, 65069738), (620, 32534869), (4349, 4638220), (7481, 2696380), (8698, 2319110), (14962, 1348190), (17396, 1159555), (21745, 927644), (29924, 674095), (37405, 539276), (43490, 463822), (74810, 269638), (86980, 231911), (134819, 149620)]